Description
In Progress® Telerik® Document Processing Libraries prior to version 2026.3.1027, uncontrolled recursion, infinite loop, unchecked loop condition and inefficient regular expression vulnerabilities in RadSpreadProcessing and RadSpreadStreamProcessing allow an unauthenticated attacker to terminate or hang the host process via a crafted XLSX or XLS workbook or formula.
References1
Metrics
- CVSS 3.1
-
7.5
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 0% percentile: 20 · as of 3 November 2026
- CWE
- CWE-606CWE-674CWE-835CWE-1333
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.